Frankly, Unreal Tournament got a lot of that energy and peaked gameplay. Very new fresh ideas like capture the flag back then was really cool. And the speed and stability was also great.
And CTF originally was from Quake 1, the threewave CTF mod by Zoid which made it into Quake 3.
Threewave: https://www.youtube.com/watch?v=nFg2PPOmA74